Agreed. I don’t have the details on what process nodes are used for those chips, but the 5x scaling trend from 25C → 85C holds true for what looks like a node bump on that DDR4 chip between RevB and RevE. It’s possible that some other design changes improved power efficiency by 27%, but a new process seems more likely. Of course, this trend could break down for other nodes.
| 25C | 85C | Multiplier | |
|---|---|---|---|
| Rev B | 15 mA | 74 mA | 4.93 |
| Rev E | 11 mA | 53 mA | 4.82 |
| Power reduction | 27% | 30% |
I’m not following what “usage” means here. Could you clarify?
Yep, this is stock Fedora 40 with s2idle suspend and no hibernation. I read that the AMD version beats Intel in runtime battery life, but I wouldn’t expect there to be any difference during suspend. If you share more details of your system setup, we may be able to figure out what’s responsible for all that power draw.
I was not as impressed with the 8-day suspend time, as my other laptop gets 14 days on a 57W battery, consuming only 170mW during suspend. Spoiled, I know. It’s a Lenovo x1 carbon gen 5 with 16GB. I don’t know how much of this difference is due to soldered LPDDR3 or S3 deep sleep. I’m still unsure what to expect for s2idle overhead versus S3, but will continue that discussion on Is Framework 13 AMD s2idle (modern standby) efficient enough?